Answer:
15
Step-by-step explanation:
20^2 + x^2 = 25^2
= 400 + x^2 = 625
= x^2 = 225
= x = 15
Answer:
Sophia is 17 years old. Sophia's brother is 11 years old.
Step-by-step explanation:
Answer:
Width = 12
Length = 58
Step-by-step explanation:
Width = x
Length = 4x + 10
Perimeter = 140
2 * ( length + width ) = 140
2 * (4x +10 + x) = 140
5x + 10 = 140/2 = 70
5x = 70- 10
5x = 60
x = 60/5 = 12
Width = 12
Length = 4 * 12 + 10 = 48 +10 = 58
Answer:11,256
Step-by-step explanation: